an emotional president obama unveiled his plan in front of an audience that included parents of newtown victims. >> she dreamed of becoming a painter. chris, her father, gave me one of her paintings. and i hung it in my private study. and every time i look at that painting, i think about how when it comes to protecting the most vulnerable among us, we must act now. for grace. >> the president outlined four major points. each one evoked memories of past mass shootings. >> we will make sure mental health professionals know their options for reporting threats of violence. >> reporter: this action makes it easier to share mental health records with authorities, a move that could have identified seung-hui cho as a threat before the virginia tech massacre. >> congress should restore a ban on military-style assault weapons and a ten-round limit for magazines. >> reporter: the previous ban expired in 2004. the gun used in newtown, connecticut is the kind that would be banned. he wants a limit on ammunition that could have reduced the number killed in aurora, colorado. >> if you want to buy a gu